+Secondary metabolites are specialized organic compounds not essential for an organism's primary life functions. They often serve vital roles in ecological interactions, offering [Chemical Defense](/wiki/chemical_defense) against threats or mediating communication, distinct from [Primary Metabolites](/wiki/primary_metabolites).
+## See also
+- [Alkaloids](/wiki/alkaloids)
+- [Terpenes](/wiki/terpenes)
+- [Phenolics](/wiki/phenolics)
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